86213999 has 2 divisors, whose sum is σ = 86214000. Its totient is φ = 86213998.

The previous prime is 86213993. The next prime is 86214017. The reversal of 86213999 is 99931268.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86213999 - 2⁴ = 86213983 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86213993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43106999 + 43107000.

It is an arithmetic number, because the mean of its divisors is an integer number (43107000).

Almost surely, 2^86213999 is an apocalyptic number.

86213999 is a deficient number, since it is larger than the sum of its proper divisors (1).

86213999 is an equidigital number, since it uses as much as digits as its factorization.

86213999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 47.

The square root of 86213999 is about 9285.1493795200. The cubic root of 86213999 is about 441.7663141642.

The spelling of 86213999 in words is "eighty-six million, two hundred thirteen thousand, nine hundred ninety-nine".